ABAP Select data from SAP table RMQSB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMQSB table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RMQSB. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RMQSB table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RMQSB TYPE STANDARD TABLE OF RMQSB,
      WA_RMQSB TYPE RMQSB,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RMQSB> TYPE RMQSB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RMQSB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RMQSB
  INTO TABLE IT_RMQSB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMQSB
*  INTO TABLE @DATA(IT_RMQSB2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RMQSB INDEX 1 INTO DATA(WA_RMQSB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RMQSB ASSIGNING <RMQSB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMQSB>-AENDERKZ = 1.
<RMQSB>-ARG_AMENGE = 1.
<RMQSB>-ARG_CODE = 1.
<RMQSB>-ARG_GRUPPE = 1.
<RMQSB>-ARG_SPRAS = 1.

ENDLOOP.

LOOP AT IT_RMQSB INTO WA_RMQSB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMQSB-AUSWAHLMGE, sy-vline,
  WA_RMQSB-AUSWIRKUNG, sy-vline,
  WA_RMQSB-BEWERTUNG, sy-vline,
  WA_RMQSB-CODE, sy-vline,
  WA_RMQSB-CODEGRUPPE, sy-vline,
  WA_RMQSB-CAMENGEVON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMQSB you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RMQSB TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RMQSB INTO WA_RMQSB.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ISOLA, internal->external for field ARG_SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMQSB-ARG_SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMQSB-ARG_SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPR_AMENGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMQSB-SPR_AMENGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMQSB-SPR_AMENGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPR_CODE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMQSB-SPR_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMQSB-SPR_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPR_GRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMQSB-SPR_GRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMQSB-SPR_GRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPR_K_TEXT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMQSB-SPR_K_TEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMQSB-SPR_K_TEXT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RMQSB_STR, 
AENDERKZ TYPE STRING,
ARG_AMENGE TYPE STRING,
ARG_CODE TYPE STRING,
ARG_GRUPPE TYPE STRING,
ARG_SPRAS TYPE STRING,
AUSWAHLMGE TYPE STRING,
AUSWIRKUNG TYPE STRING,
BEWERTUNG TYPE STRING,
CODE TYPE STRING,
CODEGRUPPE TYPE STRING,
CAMENGEVON TYPE STRING,
CAMENGEBIS TYPE STRING,
CGRUPPEVON TYPE STRING,
CGRUPPEBIS TYPE STRING,
FEHLKLASSE TYPE STRING,
FOLGEAKTI TYPE STRING,
GRUPPENTXT TYPE STRING,
INFO_FELD TYPE STRING,
KURZBWTG TYPE STRING,
KURZTEXT TYPE STRING,
LTEXT_KZ TYPE STRING,
LTEXT_AUSW TYPE STRING,
LTEXT_MASS TYPE STRING,
MASSNAHME TYPE STRING,
MUSSTEXTKZ TYPE STRING,
QKENNZAHL TYPE STRING,
SPR_AMENGE TYPE STRING,
SPR_AZEIGE TYPE STRING,
SPR_CODE TYPE STRING,
SPR_GRUPPE TYPE STRING,
SPR_K_TEXT TYPE STRING,
UEBERGR TYPE STRING,
ZDATEN TYPE STRING,
STATUS TYPE STRING,
STATUSTEXT TYPE STRING,
BB_VORSCH TYPE STRING,
BB_DUNKEL TYPE STRING,
FELDNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMQSB_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RMQSB_STR-AENDERKZ sy-vline 
WA_RMQSB_STR-ARG_AMENGE sy-vline 
WA_RMQSB_STR-ARG_CODE sy-vline 
WA_RMQSB_STR-ARG_GRUPPE sy-vline 
WA_RMQSB_STR-ARG_SPRAS sy-vline 
WA_RMQSB_STR-AUSWAHLMGE sy-vline 
WA_RMQSB_STR-AUSWIRKUNG sy-vline 
WA_RMQSB_STR-BEWERTUNG sy-vline 
WA_RMQSB_STR-CODE sy-vline 
WA_RMQSB_STR-CODEGRUPPE sy-vline 
WA_RMQSB_STR-CAMENGEVON sy-vline 
WA_RMQSB_STR-CAMENGEBIS sy-vline 
WA_RMQSB_STR-CGRUPPEVON sy-vline 
WA_RMQSB_STR-CGRUPPEBIS sy-vline 
WA_RMQSB_STR-FEHLKLASSE sy-vline 
WA_RMQSB_STR-FOLGEAKTI sy-vline 
WA_RMQSB_STR-GRUPPENTXT sy-vline 
WA_RMQSB_STR-INFO_FELD sy-vline 
WA_RMQSB_STR-KURZBWTG sy-vline 
WA_RMQSB_STR-KURZTEXT sy-vline 
WA_RMQSB_STR-LTEXT_KZ sy-vline 
WA_RMQSB_STR-LTEXT_AUSW sy-vline 
WA_RMQSB_STR-LTEXT_MASS sy-vline 
WA_RMQSB_STR-MASSNAHME sy-vline 
WA_RMQSB_STR-MUSSTEXTKZ sy-vline 
WA_RMQSB_STR-QKENNZAHL sy-vline 
WA_RMQSB_STR-SPR_AMENGE sy-vline 
WA_RMQSB_STR-SPR_AZEIGE sy-vline 
WA_RMQSB_STR-SPR_CODE sy-vline 
WA_RMQSB_STR-SPR_GRUPPE sy-vline 
WA_RMQSB_STR-SPR_K_TEXT sy-vline 
WA_RMQSB_STR-UEBERGR sy-vline 
WA_RMQSB_STR-ZDATEN sy-vline 
WA_RMQSB_STR-STATUS sy-vline 
WA_RMQSB_STR-STATUSTEXT sy-vline 
WA_RMQSB_STR-BB_VORSCH sy-vline 
WA_RMQSB_STR-BB_DUNKEL sy-vline 
WA_RMQSB_STR-FELDNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.